Mechanical Energy

Q.

The type of energy possessed by a simple pendulum when it is at the mean position, ideally is:

1. Potential energy
2. Potential and Kinetic
3. Kinetic energy
4. Zero

Q.

Which of the following is/are forms of mechanical energy?

1. Chemical energy

2. Potential energy

3. Kinetic energy

4. Light energy

Q.

Which of the following statements is correct about a freely falling body?

1. Total energy is constant.
2. Potential energy changes into kinetic energy.
3. Potential energy decreases.
4. Kinetic energy increases.

1. All 1, 2, 3, and 4

2. Only 1 and 2

3. Only 3 and 4

4. Only 2, 3 and 4

Q.

Define work energy theorem. [3 MARKS]

Q.

Which form of mechanical energy is present in an object at maximum height?

1. Kinetic energy

2. Potential energy

3. Chemical energy

4. Electrical energy

Q. Water stored in a dam possesses ___.

Q. Question 14
Can any object have momentum even if its mechanical energy is zero? Explain.

Q. The potential energy u of a particle varies with distance x from origin as u=AXX+B, where A and B are constant. The dimensions of A and B are respectively?

Q. Question 1
When a body falls freely towards the earth, then its total energy

(a) increases
(b) decreases
(c) remains constant
(d) first increases and then decreases

Q. When a person is climbing a hill, he has:

1. Both A and B
2. Only Kinetic Energy
3. Only Potential Energy
4. None of these

Q. Name the form of mechanical energy, which is put to use.

Q. What are the two forms of mechanical energy?

Q. When we rub our hands

1. kinetic energy changes into potential energy
2. potential energy changes into kinetic energy
3. heat energy changes into mechanical energy.
4. mechanical energy changes into heat energy

Q. What are the two kinds of mechanical energy.